MAS Set of 8 Ignition Coil DG508 with Motorcraft Spark Plug SP493

In this review of the MAS Set of 8 Ignition Coil DG508 and Motorcraft Spark Plug SP493 compatible with Ford Lincoln Mercury 4.6L engines, the bottom line is practical: this kit is for owners who want an OE-standard replacement pack that addresses multiple failed coil or plug issues at once. The reviewer found the set delivers solid, high-energy ignition performance and straightforward installation for DIYers and independent shops. Fitment checks and visual comparison with original parts are emphasized, and the review highlights both longevity concerns from some users and the clear value when the parts perform as intended.

Key Features

• OE standard construction: The ignition coils are built to meet or exceed original equipment specifications, providing reliable replacement performance when installed correctly.
• Wide compatibility: This 8-coil and plug set replaces many dealer numbers including DG508 and SP493, so it suits a range of Ford, Lincoln and Mercury 4.6L applications.
• High energy output: Each coil is designed for a specific application to deliver strong spark energy that helps maintain smooth engine operation under load.
• Heat resistant boots: The coil on plug boots use a high heat resistant compound to withstand engine bay temperature stress for improved durability.
• Easy installation: The coils and plugs are straightforward for a competent DIYer to install, reducing shop time and labor cost.

Who It's For

This set is aimed at owners of Ford, Lincoln or Mercury vehicles with the 4.6L engine who need to replace multiple ignition coils and plugs at once, whether to cure misfires or as preventive maintenance. It is also a good match for independent mechanics who value parts that follow OE specifications and come as a matched kit.

Shoppers who should look elsewhere include owners who cannot confirm fitment using their vehicle fitment information or those who want an extended warranty or documented long-term endurance data; a few customers reported early failures within six months, so anyone requiring long-term guaranteed lifespan might prefer dealer-sourced alternatives.

Pros & Cons

Pros

• High compatibility across many dealer part numbers simplifies sourcing for 4.6L engines.
• Built to OE standard and offers strong ignition output for smooth running.
• Heat resistant boot material helps durability in hot engine conditions.
• Cost-effective way to replace a full bank of coils and plugs at once.

Cons

• Some users reported coils failing within the first six months, so longevity can be inconsistent.
• Buyers must verify fitment and visually compare parts to originals before purchase to avoid returns.

Specifications

Brand	MAS
Included parts	Set of 8 ignition coils DG508 and Motorcraft spark plugs SP493
Compatible engines	Ford/Lincoln/Mercury 4.6L engines
Replaces	DG508, SP493 and multiple dealer part numbers listed
Construction	OE standard coils with high heat resistant boot compound
Installation	Direct replacement; easy to install for DIY or shop

Our Verdict

The MAS set is a pragmatic, value-focused replacement for owners needing a full bank of coils and plugs for 4.6L Ford family engines; it offers OE-level construction and good ignition performance for the price. Buyers should confirm fitment and accept some variability in long-term durability based on user reports, but for most DIYers and independent shops this set represents strong value when installed correctly.

Frequently Asked Questions

Will these fit my 4.6L engine?
Check your vehicle fitment information and compare the photos with your original parts; the set is made for many Ford, Lincoln and Mercury 4.6L applications but fitment must be verified.

Do the coils meet OE specs?
Yes, the ignition coils are built to achieve or exceed OE specifications and undergo quality control testing.

Are the plugs included genuine Motorcraft?
The kit includes Motorcraft SP493 compatible spark plugs paired with MAS ignition coils as a matched replacement set.